$ git clone -n https://src.fedoraproject.org/rpms/wavextract.git /var/lib/mock/f45-build-38249-722/root/chroot_tmpdir/scmroot/wavextract
Cloning into '/var/lib/mock/f45-build-38249-722/root/chroot_tmpdir/scmroot/wavextract'...
$ git fetch origin ba6a6560238a80cabf97e61e5573ea108408dc84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wavextract
 * [new ref]         ba6a6560238a80cabf97e61e5573ea108408dc84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba6a656 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild